18.3 Kingdoms and Domains. Updates to Linnaeus’ System a. Some organisms had to be reclassified as we learned more -Example: Sponges had to be reclassified.

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Presentation transcript:

18.3 Kingdoms and Domains

Updates to Linnaeus’ System a. Some organisms had to be reclassified as we learned more -Example: Sponges had to be reclassified from plants to animals when microscopes were used to see the type of cells they had. b.Changed from 2 to 6 kingdoms. -Linnaeus- 2 kingdoms (plants, animals) -Now- 6 kingdoms!

Sponges

Organisms Classified Using Five Characteristics: 1. Cell Type- Prokaryote or Eukaryote 2. Cell Wall- Does it have one? 3. Body type- Unicellular or multicellular 4. Nutrition- Heterotroph or autotroph 5. Genetics-Similiarities in DNA.

Three Domains: 1.Bacteria-Unicellular prokaryotes that have a strong cell wall and unique genetic system. Same as the eubacteria kingdom. 2. Archaea-Unicellular prokaryotes that have chemically unique cell walls. They live in extreme environments. Same as the Archeabacteria kingdom. BRAIN POP!BRAIN POP! 3. Eukarya-Organisms made up of eukaryotic cells. (Plants, animals, fungi and protists).

Characteristics of Eukaryotes Plants-Autotrophs (make their own food). - Cell Walls (made of hard cellulose) -Mostly multi-cellular

Characteristics of Eukaryotes Animals-Heterotrophs (must consume food) -No cell wals -Multi-cellular

Characteristics of Eukaryotes Fungi-Heterotrophs -Cell wall (made of hard chitin) -Mostly multi-cellular

Characteristics of Eukaryotes Protista-The “left overs” kingdom -Autotrophs or heterotrophs -Cell wall or no cell wall -Multi-cellular or uni-cellular

BRAIN POP II!